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Record Information
Version2.0
Creation Date2009-06-19 21:58:25 UTC
Update Date2014-12-24 20:23:20 UTC
Accession NumberT3D1194
Identification
Common NameCopper(I) oxide
ClassSmall Molecule
DescriptionCopper(I) oxide is an oxide of copper. It is found naturally as the mineral cuprite and is formed by the slow oxidation of copper when exposed to oxygen. Copper(I) oxide is commonly used as a pigment, a fungicide, and an antifouling agent for marine paints. It is also a semiconductor. Copper is a chemical element with the symbol Cu and atomic number 29. Copper is an essential elements in plants and animals as it is required for the normal functioning of more than 30 enzymes. It occurs naturally throughout the environment in rocks, soil, water, and air. (7, 8, 11)
Compound Type
  • Copper Compound
  • Household Toxin
  • Inorganic Compound
  • Natural Compound
  • Pesticide
Chemical Structure
Thumb
Synonyms
Synonym
Brown copper oxide
Caocobre
Copper (I) oxide
Copper hemioxide
Copper nordox
Copper oxide red
Copper oxide, red
Copper protoxide
Copper sandoz
Copper sardez
Copper suboxide
Copper-sandoz
Cupper oxide
Dicopper monoxide
Dicopper oxide
Kuprite
Nordox
Oleo nordox
Oleocuivre
Perecot
Perenex
Perenox
Purple cuprous oxide
Chemical FormulaCu2O
Average Molecular Mass143.091 g/mol
Monoisotopic Mass141.854 g/mol
CAS Registry Number1317-39-1
IUPAC Name(cupriooxy)copper
Traditional Namecuprous oxide
SMILES[Cu]O[Cu]
InChI IdentifierInChI=1S/2Cu.O
InChI KeyInChIKey=BERDEBHAJNAUOM-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of inorganic compounds known as transition metal oxides. These are inorganic compounds containing an oxygen atom of an oxidation state of -2, in which the heaviest atom bonded to the oxygen is a transition metal.
KingdomInorganic compounds
Super ClassMixed metal/non-metal compounds
ClassTransition metal organides
Sub ClassTransition metal oxides
Direct ParentTransition metal oxides
Alternative Parents
Substituents
  • Transition metal oxide
  • Inorganic oxide
  • Inorganic salt
Molecular FrameworkNot Available
External DescriptorsNot Available
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Cytoplasm
  • Extracellular
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceRed/brown crystals.
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
LogPNot Available
Predicted Properties
PropertyValueSource
logP-1.2ChemAxon
pKa (Strongest Basic)-4.4ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area9.23 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity1.35 m³·mol⁻¹ChemAxon
Polarizability4.72 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyDeposition DateView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0006-0900000000-77139b856f6938f21a572019-02-23View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0006-0900000000-994d8e1c2fdd7769b5cc2019-02-23View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0006-2900000000-530d77ca5b495ccb1c172019-02-23View Spectrum
Toxicity Profile
Route of ExposureOral (7) ; inhalation (7) ; dermal (7)
Mechanism of ToxicityExcess copper is sequestered within hepatocyte lysosomes, where it is complexed with metallothionein. Copper hepatotoxicity is believed to occur when the lysosomes become saturated and copper accumulates in the nucleus, causing nuclear damage. This damage is possibly a result of oxidative damage, including lipid peroxidation. Copper inhibits the sulfhydryl group enzymes such as glucose-6-phosphate 1-dehydrogenase, glutathione reductase, and paraoxonases, which protect the cell from free oxygen radicals. It also influences gene expression and is a co-factor for oxidative enzymes such as cytochrome C oxidase and lysyl oxidase. In addition, the oxidative stress induced by copper is thought to activate acid sphingomyelinase, which lead to the production of ceramide, an apoptotic signal, as well as cause hemolytic anemia. Copper-induced emesis results from stimulation of the vagus nerve. (7, 4, 1, 10)
MetabolismCopper is mainly absorbed through the gastrointestinal tract, but it can also be inhalated and absorbed dermally. It passes through the basolateral membrane, possibly via regulatory copper transporters, and is transported to the liver and kidney bound to serum albumin. The liver is the critical organ for copper homoeostasis. In the liver and other tissues, copper is stored bound to metallothionein, amino acids, and in association with copper-dependent enzymes, then partitioned for excretion through the bile or incorporation into intra- and extracellular proteins. The transport of copper to the peripheral tissues is accomplished through the plasma attached to serum albumin, ceruloplasmin or low-molecular-weight complexes. Copper may induce the production of metallothionein and ceruloplasmin. The membrane-bound copper transporting adenosine triphosphatase (Cu-ATPase) transports copper ions into and out of cells. Physiologically normal levels of copper in the body are held constant by alterations in the rate and amount of copper absorption, compartmental distribution, and excretion. (7, 9)
Toxicity ValuesLD50: 470 mg/kg (Oral, Rat) (5)
Lethal Dose10 to 20 grams for an adult human (copper salts). (3)
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesCopper(I) oxide is commonly used as a pigment, a fungicide, and an antifouling agent for marine paints. It is also a semiconductor. (11)
Minimum Risk LevelAcute Oral: 0.01 mg/kg/day (6) Intermediate Oral: 0.01 mg/kg/day (6)
Health EffectsPeople must absorb small amounts of copper every day because copper is essential for good health, however, high levels of copper can be harmful. Very-high doses of copper can cause damage to your liver and kidneys, and can even cause death. Copper may induce allergic responses in sensitive individuals. (8, 9)
SymptomsBreathing high levels of copper can cause irritation of the nose and throat. Ingesting high levels of copper can cause nausea, vomiting, diarrhea, headache, dizziness, and respiratory difficulty. (8, 9)
TreatmentEYES: irrigate opened eyes for several minutes under running water. INGESTION: do not induce vomiting. Rinse mouth with water (never give anything by mouth to an unconscious person). Seek immediate medical advice. SKIN: should be treated immediately by rinsing the affected parts in cold running water for at least 15 minutes, followed by thorough washing with soap and water. If necessary, the person should shower and change contaminated clothing and shoes, and then must seek medical attention. INHALATION: supply fresh air. If required provide artificial respiration.
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
DrugBank IDNot Available
HMDB IDNot Available
PubChem Compound ID14830
ChEMBL IDNot Available
ChemSpider IDNot Available
KEGG IDNot Available
UniProt IDNot Available
OMIM ID
ChEBI IDNot Available
BioCyc IDNot Available
CTD IDC000520
Stitch IDCopper(I) oxide
PDB IDNot Available
ACToR ID10641
Wikipedia LinkNot Available
References
Synthesis ReferenceNot Available
MSDST3D1194.pdf
General References
  1. Brewer GJ: A brand new mechanism for copper toxicity. J Hepatol. 2007 Oct;47(4):621-2. Epub 2007 Jul 23. [17697726 ]
  2. Bardsley PA, Howard P, DeBacker W, Vermeire P, Mairesse M, Ledent C, Radermecker M, Bury T, Ansquer J: Two years treatment with almitrine bismesylate in patients with hypoxic chronic obstructive airways disease. Eur Respir J. 1991 Mar;4(3):308-10. [1907566 ]
  3. Baselt RC (2000). Disposition of Toxic Drugs and Chemicals in Man, 5th ed. Foster City, CA: Chemical Toxicology Institute.
  4. Baxter PJ, Adams PH, & Aw TC (2000). Hunter's Diseases of Occupations. 9th ed. New York, NY: Oxford University Press Inc.
  5. Budavari, S (ed) (1989). The Merck Index - Encyclopedia of Chemicals, Drugs and Biologicals. Rahway, NJ: Merck and Co., Inc.
  6. ATSDR - Agency for Toxic Substances and Disease Registry (2001). Minimal Risk Levels (MRLs) for Hazardous Substances. U.S. Public Health Service in collaboration with U.S. Environmental Protection Agency (EPA). [Link]
  7. Wikipedia. Copper. Last Updated 29 May 2009. [Link]
  8. ATSDR - Agency for Toxic Substances and Disease Registry (2004). Toxicological profile for copper. U.S. Public Health Service in collaboration with U.S. Environmental Protection Agency (EPA). [Link]
  9. International Programme on Chemical Safety (IPCS) INCHEM (1998). Environmental Health Criteria for Copper. [Link]
  10. US Environmental Protection Agency (2008). Drinking Water Health Advisory for 2,4-Dinitrotoluene and 2,6-Dinitrotoluene. [Link]
  11. Wikipedia. Copper(I) oxide. Last Updated 7 May 2009. [Link]
Gene Regulation
Up-Regulated GenesNot Available
Down-Regulated GenesNot Available

Targets

General Function:
Protein homodimerization activity
Specific Function:
Catalyzes the rate-limiting step of the oxidative pentose-phosphate pathway, which represents a route for the dissimilation of carbohydrates besides glycolysis. The main function of this enzyme is to provide reducing power (NADPH) and pentose phosphates for fatty acid and nucleic acid synthesis.
Gene Name:
G6PD
Uniprot ID:
P11413
Molecular Weight:
59256.31 Da
References
  1. Brewer GJ: A brand new mechanism for copper toxicity. J Hepatol. 2007 Oct;47(4):621-2. Epub 2007 Jul 23. [17697726 ]
  2. Baxter PJ, Adams PH, & Aw TC (2000). Hunter's Diseases of Occupations. 9th ed. New York, NY: Oxford University Press Inc.
  3. Wikipedia. Copper. Last Updated 29 May 2009. [Link]
  4. US Environmental Protection Agency (2008). Drinking Water Health Advisory for 2,4-Dinitrotoluene and 2,6-Dinitrotoluene. [Link]
General Function:
Nadp binding
Specific Function:
Maintains high levels of reduced glutathione in the cytosol.
Gene Name:
GSR
Uniprot ID:
P00390
Molecular Weight:
56256.565 Da
References
  1. Brewer GJ: A brand new mechanism for copper toxicity. J Hepatol. 2007 Oct;47(4):621-2. Epub 2007 Jul 23. [17697726 ]
  2. Baxter PJ, Adams PH, & Aw TC (2000). Hunter's Diseases of Occupations. 9th ed. New York, NY: Oxford University Press Inc.
  3. Wikipedia. Copper. Last Updated 29 May 2009. [Link]
  4. US Environmental Protection Agency (2008). Drinking Water Health Advisory for 2,4-Dinitrotoluene and 2,6-Dinitrotoluene. [Link]
General Function:
Protein homodimerization activity
Specific Function:
Hydrolyzes the toxic metabolites of a variety of organophosphorus insecticides. Capable of hydrolyzing a broad spectrum of organophosphate substrates and lactones, and a number of aromatic carboxylic acid esters. Mediates an enzymatic protection of low density lipoproteins against oxidative modification and the consequent series of events leading to atheroma formation.
Gene Name:
PON1
Uniprot ID:
P27169
Molecular Weight:
39730.99 Da
References
  1. Brewer GJ: A brand new mechanism for copper toxicity. J Hepatol. 2007 Oct;47(4):621-2. Epub 2007 Jul 23. [17697726 ]
  2. Baxter PJ, Adams PH, & Aw TC (2000). Hunter's Diseases of Occupations. 9th ed. New York, NY: Oxford University Press Inc.
  3. Wikipedia. Copper. Last Updated 29 May 2009. [Link]
  4. US Environmental Protection Agency (2008). Drinking Water Health Advisory for 2,4-Dinitrotoluene and 2,6-Dinitrotoluene. [Link]
General Function:
Protein homodimerization activity
Specific Function:
Has low activity towards the organophosphate paraxon and aromatic carboxylic acid esters. Rapidly hydrolyzes lactones such as statin prodrugs (e.g. lovastatin). Hydrolyzes aromatic lactones and 5- or 6-member ring lactones with aliphatic substituents but not simple lactones or those with polar substituents.
Gene Name:
PON3
Uniprot ID:
Q15166
Molecular Weight:
39607.185 Da
References
  1. Brewer GJ: A brand new mechanism for copper toxicity. J Hepatol. 2007 Oct;47(4):621-2. Epub 2007 Jul 23. [17697726 ]
  2. Baxter PJ, Adams PH, & Aw TC (2000). Hunter's Diseases of Occupations. 9th ed. New York, NY: Oxford University Press Inc.
  3. Wikipedia. Copper. Last Updated 29 May 2009. [Link]
  4. US Environmental Protection Agency (2008). Drinking Water Health Advisory for 2,4-Dinitrotoluene and 2,6-Dinitrotoluene. [Link]
General Function:
Not Available
Specific Function:
Not Available
Gene Name:
SNCA
Uniprot ID:
P37840
Molecular Weight:
14460.155 Da
References
  1. Davies P, Fontaine SN, Moualla D, Wang X, Wright JA, Brown DR: Amyloidogenic metal-binding proteins: new investigative pathways. Biochem Soc Trans. 2008 Dec;36(Pt 6):1299-303. doi: 10.1042/BST0361299. [19021544 ]
General Function:
Transition metal ion binding
Specific Function:
Functions as a cell surface receptor and performs physiological functions on the surface of neurons relevant to neurite growth, neuronal adhesion and axonogenesis. Involved in cell mobility and transcription regulation through protein-protein interactions. Can promote transcription activation through binding to APBB1-KAT5 and inhibits Notch signaling through interaction with Numb. Couples to apoptosis-inducing pathways such as those mediated by G(O) and JIP. Inhibits G(o) alpha ATPase activity (By similarity). Acts as a kinesin I membrane receptor, mediating the axonal transport of beta-secretase and presenilin 1. Involved in copper homeostasis/oxidative stress through copper ion reduction. In vitro, copper-metallated APP induces neuronal death directly or is potentiated through Cu(2+)-mediated low-density lipoprotein oxidation. Can regulate neurite outgrowth through binding to components of the extracellular matrix such as heparin and collagen I and IV. The splice isoforms that contain the BPTI domain possess protease inhibitor activity. Induces a AGER-dependent pathway that involves activation of p38 MAPK, resulting in internalization of amyloid-beta peptide and leading to mitochondrial dysfunction in cultured cortical neurons. Provides Cu(2+) ions for GPC1 which are required for release of nitric oxide (NO) and subsequent degradation of the heparan sulfate chains on GPC1.Beta-amyloid peptides are lipophilic metal chelators with metal-reducing activity. Bind transient metals such as copper, zinc and iron. In vitro, can reduce Cu(2+) and Fe(3+) to Cu(+) and Fe(2+), respectively. Beta-amyloid 42 is a more effective reductant than beta-amyloid 40. Beta-amyloid peptides bind to lipoproteins and apolipoproteins E and J in the CSF and to HDL particles in plasma, inhibiting metal-catalyzed oxidation of lipoproteins. Beta-APP42 may activate mononuclear phagocytes in the brain and elicit inflammatory responses. Promotes both tau aggregation and TPK II-mediated phosphorylation. Interaction with overexpressed HADH2 leads to oxidative stress and neurotoxicity. Also binds GPC1 in lipid rafts.Appicans elicit adhesion of neural cells to the extracellular matrix and may regulate neurite outgrowth in the brain.The gamma-CTF peptides as well as the caspase-cleaved peptides, including C31, are potent enhancers of neuronal apoptosis.N-APP binds TNFRSF21 triggering caspase activation and degeneration of both neuronal cell bodies (via caspase-3) and axons (via caspase-6).
Gene Name:
APP
Uniprot ID:
P05067
Molecular Weight:
86942.715 Da
References
  1. Davies P, Fontaine SN, Moualla D, Wang X, Wright JA, Brown DR: Amyloidogenic metal-binding proteins: new investigative pathways. Biochem Soc Trans. 2008 Dec;36(Pt 6):1299-303. doi: 10.1042/BST0361299. [19021544 ]